CA1208931A - Measuring and linearizing circuit device for a capacitive primary element - Google Patents

Measuring and linearizing circuit device for a capacitive primary element

Info

Publication number
CA1208931A
CA1208931A CA000439092A CA439092A CA1208931A CA 1208931 A CA1208931 A CA 1208931A CA 000439092 A CA000439092 A CA 000439092A CA 439092 A CA439092 A CA 439092A CA 1208931 A CA1208931 A CA 1208931A
Authority
CA
Canada
Prior art keywords
multivibrator
circuit device
measuring
capacitive
measuring sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000439092A
Other languages
English (en)
French (fr)
Inventor
Erhard Lehle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell GmbH
Original Assignee
Honeywell GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6175966&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1208931(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Honeywell GmbH filed Critical Honeywell GmbH
Application granted granted Critical
Publication of CA1208931A publication Critical patent/CA1208931A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
CA000439092A 1982-10-18 1983-10-17 Measuring and linearizing circuit device for a capacitive primary element Expired CA1208931A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3238507.2-52 1982-10-18
DE19823238507 DE3238507A1 (de) 1982-10-18 1982-10-18 Mess- und linearisierungsschaltung fuer einen kapazitiven messfuehler

Publications (1)

Publication Number Publication Date
CA1208931A true CA1208931A (en) 1986-08-05

Family

ID=6175966

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000439092A Expired CA1208931A (en) 1982-10-18 1983-10-17 Measuring and linearizing circuit device for a capacitive primary element

Country Status (5)

Country Link
US (1) US4563634A (de)
EP (1) EP0106345B1 (de)
JP (1) JPS5992361A (de)
CA (1) CA1208931A (de)
DE (2) DE3238507A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500839A1 (de) * 1985-01-12 1986-07-17 Steinecker Elektronik GmbH, 6052 Mühlheim Messgeraet zur messung der relativen feuchte
US4816748A (en) * 1986-08-28 1989-03-28 Nippon Mining Co., Ltd. Electronic thermohygrometer with square-wave pulse signal generator
GB2210693B (en) * 1987-10-02 1991-10-23 Scanflow Systems Ltd A portable moisture measuring instrument
EP0332934A3 (de) * 1988-03-14 1992-05-20 Siemens Aktiengesellschaft Anordnung zur Messung des Partialdruckes von Gasen oder Dämpfen
US5065625A (en) * 1989-05-12 1991-11-19 Tdk Corporation Humidity meter
US5274334A (en) * 1989-12-18 1993-12-28 Honeywell Inc. Calibrated physical parameter value measurement system
US5166560A (en) * 1991-08-02 1992-11-24 Bell Communications Research, Inc. Voltage-controlled variable capacitor
JP2536226Y2 (ja) * 1991-12-13 1997-05-21 ティーディーケイ株式会社 湿度センサ
DE4226137A1 (de) * 1992-08-07 1994-02-10 Honeywell Regelsysteme Gmbh Schaltungsanordnung zur Auswertung des Signales eines kapazitiven Meßwertfühlers
DE4418176A1 (de) * 1994-05-25 1996-02-15 Thomson Brandt Gmbh Meßeinrichtung mit linearer bzw. digitaler Meßwertsignalausgabe für Meßobjekte nichtlinearer Meßwertänderungscharakteristik
DE4445535A1 (de) * 1994-12-20 1996-06-27 Tr Elektronic Gmbh Optischer Sensor zur berührungslosen Abstandserfassung
ATE239224T1 (de) * 1995-06-30 2003-05-15 Klaus Zuechner Messeinrichtung und verfahren zur bestimmung des wassergehaltes in einem gas
US5757195A (en) * 1996-07-19 1998-05-26 Honeywell Inc. Humidity sensing circuit
GB9704064D0 (en) * 1997-02-27 1997-04-16 Aromascan Plc Electronic circuits
US6151967A (en) * 1998-03-10 2000-11-28 Horizon Technology Group Wide dynamic range capacitive transducer
US6556417B2 (en) * 1998-03-10 2003-04-29 Mcintosh Robert B. Method to construct variable-area capacitive transducers
DE19924284B4 (de) * 1998-05-30 2004-12-09 Christoph Nailis Verfahren zur Messung eines Luft-Brennstoff-Verhältnisses in einem Brennraum
WO2006002301A1 (en) 2004-06-21 2006-01-05 Kele, Inc. Measuring the capacitance of a capacitive sensor with a microprocessor
DE102007042500B4 (de) * 2007-09-07 2022-05-05 Innovative Sensor Technology Ist Ag Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546612A (en) * 1968-09-16 1970-12-08 Barber Colman Co Non-linear condition sensor and compensating amplifier therefor
SU404022A1 (de) * 1972-04-17 1973-10-26 Ленинградский ордена Ленина политехнический институт М. И. Калинина
DE2362219A1 (de) * 1973-12-14 1975-06-19 Kleeberg Hans Joachim Funktions-konverter zur linearisierung von radiometrischen feuchte und dichtemessungen
US4093915A (en) * 1976-01-12 1978-06-06 Setra Systems, Inc. Capacitance measuring system
US4387601A (en) * 1980-07-01 1983-06-14 Hokushin Electric Works, Ltd. Capacitance type displacement conversion device

Also Published As

Publication number Publication date
US4563634A (en) 1986-01-07
EP0106345A3 (en) 1985-03-20
DE3368767D1 (en) 1987-02-05
EP0106345A2 (de) 1984-04-25
DE3238507A1 (de) 1984-04-19
JPS5992361A (ja) 1984-05-28
EP0106345B1 (de) 1986-12-30

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Legal Events

Date Code Title Description
MKEX Expiry